Daily quiz #010 - can we replace the ?

Good day steemians
Honestly, it been almost a week now the daily quiz has not been active which is actually due to my inconveniences here.

But right now I guess am back and better and also with a new quiz

As we all know, only the best three commenters with the correct answer and explanation goes away with the bounty (SBD) I'm placing on this post. To know more about the steem bounty project, kindly check @steem-bounty blog.

Here are the Rules!

1. All participants must upvote and comment on this post
2. All participants must follow me
3. Only the best three will be chosen
4. After three days of this post, I will choose and announced the winners of this contest
5. You are not allowed to edit your comment.

Also congratulations to the winners of the past quizzes.

Happy Steeming....